If you have your ports set up correctly, you should be able to run SRB2 and go to Multiplayer->Host Game. I can't remember the exact details, but http://http://wiki.srb2.org/wiki/Multiplayer should provide the info you need. From there, it's just a matter of keeping your computer on and switching game types each day. I think that there's a way for you to enter spectator mode so your character isn't just hanging around the map when you're not playing.

Sorry for the late response; I hadn't realized that no one had answered your question yet.

I'm pretty sure TheBetaFox has the answer he seeks, but the fact that the first post reeks of an advertisement for his proposed server - so soon after he got an infraction for advertising in separate topic - has had me rather wary about this topic overall.

Oh; oops. I didn't know you could do it that way. That makes more sense. I figured I'd take a stab at it since there weren't any other answers yet, but I guess that didn't really work.

It would, but it's kind of inconvenient to use up all the resources for rendering the game and playing its audio if you want to use any other programs in the meantime, and, IIRC, the host would always occupy a slot.

It's not that hard to understand what he is saying, he just wants to make a 24/7 server.

"Hello, I'm planning to make a Dedicated Server, I would like to make it 24/7, but I don't know how, so can anyone tell me what tools I need to make a 24/7 Server?
The server will have a schedule for Game Modes, for example:

We can read, thank you. That he wanted a 24/7 server was blatantly obvious, but he phrased it like an advertisement for said server (despite not even having it up yet).

And everybody knows what 24/7 means. Everybody.

There are some people that don't know the "obvious" stuff, so adding some extra information wont hurt.

Yes, I also noticed that it is phrased as an advertisement, that has been pointed out already.

And from the way you wrote the reply, it makes me think like I offended someone, I never said that you can't read, it might have sounded like it, but I truly didn't mean that, and sorry if I did offend you